7
TEMPERATURE SETTING
Set the operating tip temperature of the channel powering the TJ-70 handpiece to
482°C (900°F). On very light boards, you may need to lower the temperature to
protect the board from damage.
On MBT 250 and PRC 2000 systems, set the tip temperature offset to 3°C (6°F)
(default setting).
CONTROLLABLE PRESSURE PORT ADJUSTMENT
Air flow is actuated by depressing the finger switch on the handpiece or the optional
foot pedal switch. The rate of air flow can be controlled by the Controllable
PRESSURE
Port on the front panel of the power source. Select and install a tip (see
Tip Installation). Experiment using the procedure following to determine an
appropriate level of air flow for your application.
1. Place a tissue paper (or like material) on the surface of your work bench.
NOTE
Insure that no flammable materials are positioned beneath the tissue. A
Controllable
PRESSURE
Port setting of
MIN
to
3
is the best for general use.
A setting of
MIN
to
1
are recommended when installing very small
components such as chip capacitors.
2. With the Controllable
PRESSURE
Port set at minimum (
MIN
), press the
finger switch on the handpiece and direct the hot air at the tissue from a
distance of about 0.64cm (1/4 inch).
3. While continuing to depress the finger switch, slowly draw a series of
burn lines on the tissue paper while increasing the Controllable
PRESSURE
Port setting slowly with the free hand.
4. Continue to experiment drawing the burn lines. Vary the the speed of
handpiece movement, distance of the tip from the tissue and the
Controllable
PRESSURE
Port setting until you become comfortable with
handpiece use.